Latex sludge waste biocompost for management of soil fertility and productivity (Record no. 291456)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 07409nam a22001937a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 631.4 |
| Item number | SRE/LA PG |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Sreeshna, T |
| 245 ## - TITLE STATEMENT | |
| Title | Latex sludge waste biocompost for management of soil fertility and productivity |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Vellayani |
| Name of publisher, distributor, etc | Department of Soil Science and Agricultural Chemistry, College of Agriculture |
| Date of publication, distribution, etc | 2023 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 141p. |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | MSc |
| 520 3# - SUMMARY, ETC. | |
| Abstract | The study entitled “Latex sludge waste biocompost for the management of soil fertility and productivity” was carried out during 2021-23 at the Department of Soil Science and Agricultural Chemistry, College of Agriculture, Vellayani. The objective of the study was production and characterization of latex sludge waste compost; evaluation on soil physical, chemical and biological properties and crop productivity using bush cowpea (Vigna unguiculata L.) as test crop. The study comprised of three parts viz., production and characterization of latex sludge waste compost, soil incubation study for evaluating the nutrient release pattern and field experiment for evaluating the performance of latex sludge waste compost. The latex sludge waste for conducting the experiment was procured from HLL, Trivandrum. The latex sludge compost was prepared by aerobic heap method, wherein it was mixed with bulking agents such as sawdust, cattle manure and zeolite in different combinations as per ten treatments. To this, 5 per cent of composting inoculum was added uniformly to all treatments. The design followed was completely randomized design (CRD) with 10 treatments replicated thrice. The treatment combinations were T1- Latex sludge waste + Sawdust (1:1), T2-Latex sludge waste + Sawdust + Cattle manure (1:1:1), T3-Latex sludge waste + Zeolite (1:1), T4- Latex sludge waste + Zeolite + Cattle manure (1:1:1), T5-Latex sludge waste + Sawdust (2:1), T6-Latex sludge waste + Sawdust + Cattle manure (2:1:1), T7- Latex sludge waste + Zeolite (2:1), T8- Latex sludge waste + Zeolite + Cattle manure (2:1:1), T9- Latex sludge waste + Zeolite + Sawdust + Cattle manure (2:1:1:1) and T10- Latex sludge waste alone. The physico-chemical and biological properties of the produced latex sludge composts were analysed. Based on the analysed parameters viz., maturity of composts, clean index, fertilizing index, available major and minor nutrients, enzyme status and C:N ratio, four best treatments were identified. These treatments were subjected to an incubation study and a field experiment. The selected treatments were T2, T4, T6 and T9. Among these T9 (Latex sludge compost prepared from the mixture of latex sludge waste, zeolite, sawdust and cattle manure in 2:1:1:1 ratio) showed highest values of nitrogen (1.66%), phosphorus (0.96%), potassium (0.42%), calcium (3.91%), sulphur (0.61%), iron (1876 mg kg-1), manganese (189 mg kg-1), zinc (290 mg kg-1), copper (35.36 mg kg-1), dehydrogenase (554.86 µg TPF hydrolysed g -1 compost 24 h -1) and the lowest value for C:N ratio (12.39). The nutrient content of T6 (Compost prepared from latex sludge waste, sawdust and cattle manure in 2:1:1 ratio) is comparable with T9. In part 2 of the study, a soil incubation experiment was carried out to investigate the nutrient release pattern of selected composts. One kg of 2 mm sieved soil was taken from the site of field experiment and incubated at field capacity for 3 months. The best treatments selected after characterization were imposed at the surface of the soil @ 10 g kg-1 and thoroughly mixed. Soil samples were drawn at initial, 1st, 4th, 8th and 12th weeks of incubation and analysed for evaluating the nutrient release pattern. The treatments include four composts selected from part 1 and absolute control. From the incubation study, it was observed that pH and EC was increased during incubation over a period of three month. Phosphorus, potassium, calcium, sulphur, copper, organic carbon and dehydrogenase activity were found to be maximum at 4th week of incubation. Zinc, iron and magnesium content were observed to be maximum at 12th week of incubation while manganese availability was maximum during 8th week of incubation. Latex sludge waste, zeolite, sawdust and cattle manure in 2:1:1:1 ratio and latex sludge waste, sawdust and cattle manure in 2:1:1 ratio recorded the highest values for the available nutrient status during incubation period. A field experiment was carried out using bush cowpea var. Bhagyalakshmi as test crop from March to May 2023, in RBD with 7 treatments replicated thrice. In the field experiment 7 treatments were imposed viz., T1- Latex sludge waste + Sawdust + Cattle manure (1:1:1), T2- Latex sludge waste + Zeolite + Cattle manure (1:1:1), T3- Latex sludge waste + Sawdust + Cattle manure (2:1:1), T4- Latex sludge waste + Zeolite + Sawdust + Cattle manure (2:1:1:1) and T5- FYM as per KAU POP, T6- KAU organic POP and T7- Absolute control. Analysis of the postharvest soil for chemical properties revealed that the highest values for organic carbon (1.17%), available nitrogen (322.31 kg ha-1), calcium (314.39 mg kg-1), sulphur (22.72 mg kg-1), iron (39.97 mg kg-1), copper (1.82 mg kg-1), zinc (5.26 mg kg-1) and dehydrogenase (195.23 µg of TPF hydrolysed g -1 of soil 24 h -1) were recorded for T4. The highest value for phosphorus (96.56 kg ha-1), potassium (268.25 kg ha-1), magnesium (57.78 mg kg-1) and manganese (25.54 mg kg-1) were observed for T2. Analysis of the rhizospheric soil showed the highest values of soil respiration (30.14 mg CO2 100g -1 soil) and microbial biomass carbon (78.30 mg kg -1 soil) for T3. T4 recorded the highest value for microbial respiratory quotient (40.15) which was on par with T3 (38.06). Bacterial population in the rhizosphere soil was found highest for T3 (7.79 log cfu g-1 soil), fungi in T4 (4.81 log cfu g-1 soil) followed by T3 (4.79 log cfu g-1 soil) and actinomycetes in T2 (4.69 log cfu g-1 soil). Application of latex sludge waste compost had significantly influenced the biometric and yield parameters of bush cowpea. The root weight (13.5 g) and root volume (18.67 cm3) were found to be highest in T3 which was on par with T4. The highest number of effective nodules were noticed in treatment T4 (29.13) which was on par with T3 and T6. T4 recorded the highest yield (7526 kg ha-1) followed by T3 and drymatter production (4641 kg ha-1) was found highest in T4. Highest B:C ratio was recorded in T3 (2.15). It may be inferred that the compost produced from latex sludge waste, zeolite, sawdust and cattle manure in 2:1:1:1 ratio had the highest values of N, P, K, micronutrients and enzyme activity. The nutrient content of latex sludge waste with sawdust and cattle manure in 2:1:1 ratio is comparable with latex sludge waste with zeolite, sawdust and cattle manure in 2:1:1:1 ratio. Latex sludge waste compost application had a positive effect on soil properties during incubation and field study. From the study, it can be concluded that latex sludge waste, sawdust and cattle manure in 2:1:1 ratio is economically viable and best treatment. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Soil Science and Agricultural Chemistry |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Latex sludge |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Biocompost |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Soil fertility |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Aparna, B (Guide) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Item type | Theses |
| Not for loan | Collection code | Permanent location | Current location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Not For Loan | Thesis | KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2024-07-19 | 631.4 SRE/LA PG | 176042 | 2024-07-19 | Theses |